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Significance and Use
This guide provides information for the sampling of seized-drug submissions.
The principal purpose of sampling in the context of this guide is to answer relevant questions about a population by examination of a portion of the population. For example:
|What is the net weight of the population?|
|What portion of the units of a population can be said to contain a given drug at a given level of confidence?|
By developing a sampling strategy and implementing appropriate sampling schemes, as illustrated in Fig. 1, a laboratory will minimize the total number of required analytical determinations, while ensuring that all relevant legal and scientific requirements are met.
FIG. 1 Relationship of Various Levels Required in Sampling
1.1 This guide covers minimum considerations for sampling of seized drugs for qualitative and quantitative analysis.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E105 Practice for Probability Sampling of Materials
E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or Process
E141 Practice for Acceptance of Evidence Based on the Results of Probability Sampling
E1732 Terminology Relating to Forensic Science
E2329 Practice for Identification of Seized Drugs
E2334 Practice for Setting an Upper Confidence Bound For a Fraction or Number of Non-Conforming items, or a Rate of Occurrence for Non-conformities, Using Attribute Data, When There is a Zero Response in the Sample
ISO StandardsISO3534-2 Statistics - Vocabulary and Symbols - Part 2: Statistical Quality Control
ICS Number Code 11.100.30 (Analysis of blood and urine)
UNSPSC Code 41115813(Toxicology analyzers)